Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95fd6dca51efab1…

MALICIOUS

PDF

37.0 KB Created: 2020-08-14 22:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e5cf1a8b3efcd9919c9894d8c3e80c2 SHA-1: a484d08988278c1b1e2181384d1c01c0baa3761d SHA-256: d95fd6dca51efab126aa2a8d739ac23e6dea3c6257357dc3f1a3171a0daf28cc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'suffix worksheets for 3rd grade' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a malicious redirector link indicates the document is designed to lead the user to a harmful destination.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=suffix+worksheets+for+3rd+grade
    • http://files.my-minis.com/uploads/1/3/1/0/131070846/tibuxake-vitisukinigek-mekajazinoner.pdf
    • http://files.edgewoodbands.com/uploads/1/3/2/6/132682739/da6191bfcff6.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/lotumasajifakizatume.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peboginesewuxexadamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdf
    • https://cdn.shopify.com/s/files/1/0432/1548/7135/files/vapajus.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6463/files/kirezezolexixurugukunaga.pdf
    • https://cdn.shopify.com/s/files/1/0453/9131/5112/files/environment_and_ecology_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/snow_leopard_iso_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/auslogics_driver_updater.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/nafulomol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d3.bin
d3af06e54b3fcddea6fc757177ef23cbbdd2527644a5269588e7c2fc96e79647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D3 5628 bytes
font_01_sfnt_off0000660c.bin
a61c5aab47811afe73cd38045ea6918293b6ab5ac9509ea906f6716a5a57f1cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660C 9864 bytes

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